Heating system.



G. W. COLEMAN.

HEATIM SYSTEM. APPLICATCON FILED OCT. 16' 1916.

Patented $8M. H, 191?.

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OHIO, ASSIGNOR OF THREE-FOURTH?) TU ABIGAIL COLEMAN AND ONE-FOURTH TO JAMES N. RAMSEY, BOTH 0F CINCIN- Itn'rI, omo.

HEATING SYSTEM.

Specification of Letters Patent.

Patented Sept. 11, 191?.

Application filed October 16, 1916. Serial No. 125,99 t.

'ing Systems, of which the following is a specification.

=My invention relates to heating systems in which heated air is-supplied to the room or other space to be heated after being passed through or over suitable heating. means,

and more especially apparatus wherein a fluid fuel is used in the heating The object of my invention is to lessen the cost and increase the efliciency of such systems; and especially to heat a number of difierent rooms or separated spaces by means of one self-contained heating apparatus or to heat any one of such rooms or spaceswitliout heating the others, and in so doing to use only a proportionate amount of fuel.

My invention consists in the combination of parts and in the details of construction and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawings: Figure 1 is a general perspective view of a'system embodying my invention;

Fig. 2 is a plan view of the heating apparatus;

Fig. 3 is an" inverted plan view of the same; and

Fig. 4 is a vertical cross-section on a plane corresponding to the line 4-4: of Fig. 2.

As my invention is exemplified herein, there is provision for heatingfour separate rooms or spaces. It will be understood, however, that like other heating apparatus, provision may be made for heating any reasonable number of separate rooms or spaces. The upright cylindrical casing 1 has a bottom 2 with a large central opening 3, and has a top 4: which is closed except in its center where there passes out through it the fume outlet 5 which, as shown in Fig;

1, runs upwardly and then horizontally into achimney 6. This fume outlet 5 may be provided with a damper 7. The several hot-air pipes 8 lead from the sides of the casing 1, near its top, and run transversely in their several directions, as may 'be required to conduct the heated air to the spaces required to be heated. As shown in Fig. 1, one of these hot air pipes runs to a floor register 9 in the room directly above the installation; while another runs to an upright conduit 10 in the Wall of the building in a manner well understood as being for the purpose of conducting the heated air to an upper room of the building. It will be understood that this register 9 and the conduit 10 are only examples of means whereby the hot air pipes or conductors have conducting connections with the respective spaces to be heated; and that any well known equivalent of these may be utilized in connection with my invention.

Mounted inside the casing 1, just below the connections of the respective hot-air pipes 8 with the casing are combustion chambers '11; there being one for each hot air pipe or conductor 8. Leading up from each combustion chamber 11 into the respective hot air pipe 8 is a hot-fume conductor or flue 12, which is of. considerably less crosssection than the hot-air pipe 8 and leads along the bottom thereof for a greater or less distance according to the conditions encountered and then curves upward and leads backward along the top of the hot air pipe 8 and into a fume chamber or manifold 13, centrally located in the upper part of the casing 1 and which has the hereinv before mentioned fume outlet 5 leading up from it through the top 4 of the casing.

As I prefer to proportion the hot air ipes 8 and their respective fluesv 12, the ower outwardly leading part 14 of the flue is of diameter somewhat less than one-half that of the hot air pipe 8 and the upper return part 15 is of a somewhat less diameter than the lower part 14; the return bend 16.

preferably being of the diameter of the upper part 15 and connecting with the lower part 14 by means of a tapered length of pipe 17. This proportioning of the successive lengths of conductor through which the is minimized by a small part of the heat re-- ceived from the outwardly leading part. It will also be noted that the fume outlet 5 is of cross-sectional area much less than the added cross-sectional areas'of all of the fines or fume conductors 12. This proportioning of these parts adds to the effect just described.

In the pipes 8 that lead to the register 9 and to the conduit 10, as shown in Fig. 1, the fume conductors 12 are continued out to the vicinity of these conducting connections. In the hot-air pipe 8, at the right, however,

I the fume conductor 12 leads out in the pipe 8 a much less distance. Also, as here shown, there is a damper 18 in the hot-air pipe 8 past where the flue 12 turns backward. It will be understood that the hot fume conductors 12 are carried out very close to the conducting connection where severe conditions are encountered, as with a large room or one very much exposed; while in those pipes 8 that conduct air to the small roomsor rooms not very much exposed, the flues or fume conductors are, like the flue 12, not carried out so far. Also, where permanent adjustment of the conducting capacity of the hot air pipe 8 is required, the damper 18 is useful; the varyingaadjustments being afforded by operating t e damper usually found in the register in the room.

Each one of the combustion chambers 11 is preferably tapered from its bottom up to its junction with its respective conductor or fiue'12 or 12 and, in its side next to the inner side of the casing 1, it has an opening registering with a similarly shaped opening 19 in the casing side. The bottom of the combustion chamber is closed, and the side of the chamber 11 and the casing side 1 are intimately seamed together all around the opening 19. Thus, the heat combustion chamber 11, while being inside the casing-1,

'is entirely distinct therefrom. The fume conductors or flues 12 or 12 are also ti htly joined to the respective combustion 0 ambers 11 and to the fume chamber 13, and this fume chamber and the fume conductors throughout their lengths are so constructed that their interiors are entirely distinct from the interiors of the casing 1 and the hot-air pipes or conductors 8 in which they are located. Thus the fumes from combustion in the combustion chambers 11 are conducted through the interiors of the casing 1 and of the pipes 8, which the fume conductors or flues 12 or 12 lead into or out of, but

at the same time none of these fumes can escape into the hot-air pipes; so that the purity of the heated air is insured.

In the lower part of each combustion chamber 11 is provided a suitable burner 20 for burning fluid fuel such as gas, and each burner is provided with a mixer 21 outside the casing and connecting with the burner through the respective opening 19. -Fuel supply pipes 22 radiate from a cross-connection 23 in the center of the casing, and run under the bottoms of the combustion chambers 11 and out through the walls of the .casing 1 and up to the respective mixers 21,

in any one o the combustion chambers 11 upon opening of the respective valve 24. It will thus be seen that combustion may be produced in any one of the combustion chambers 11 independently, so that hot fumes may be supplied to any one of the hot fume conductors or flues 12'or- 12 in a respective hot-air pipe or conductor 8, so that a room or space to which. that pipe or conductor 8 leads may be heated without consuming fuel in heating any rooms or spaces, or conductors leading to such rooms, or spaces, when these other rooms or spaces are not required to be heated. Thus the consumption of fuel may be very nicely adjusted to the heating requlrements.

Preferably, the casing 1 is supported some distance from the floor, and, as here shown,

- so supported by three legs 26 fixed to the sides of the lower parts of the sides of'the casing.

While the economy incident to the provision of an individual combustion chamber for each hot-air pipe 8 and its conductor or flue 12 or 12 is highly desirable, it will be understood that the advantage of leading the hot-fume conductor into and out of the hot-air conductors is attained even if these hot-fume conductors lead from a common heating chamber. Also, it will be understood that in either case the advanta es are attained with solid fuel as well as with fluid fuel, such as gas; although the convenience of use is much less. These, as well as other minor modifications are possible; and therefore, although I have described in detail a specific embodiment of my invention, I do not wish to be understood as being limited thereto, but what I claim as new and desire to secure by Letters Patent is:

1. A furnace comprisinga casing, a plurality of hot air pipes each directly and separately connecting said casing with a separate space to be heated, a fume outlet, a plurality of heat conductors and radiators, each within but distinctfrom the interior of a respective one of said hot air pipes and leading a material distance therein, then leading backwardly therein to said fume outlet, and

-means for supplying heat to said heat conductors. I

2. A gas heated furnace comprising a casing, hot air pipes directly connecting said casing to a space to be heated, a fume outlet, a plurality of independently operable heaters within said casing, a heat conductor and radiator leading from each heater a material distance within its respective hot air pipe, and then returning upon itself therein to within said casing and thence to said outlet, and means for supplying heat to said heaters.

3. A self-contained, portable furnace comprising a casing, individual hot air pipes leading directly from said casing to rooms to be heated, a manifold within the casing, a fume outlet, a plurality of independently operable heaters within said casing, a heat conductor and radiator leading from each heater a material distance within its respective hot air pipe, and then returning upon itself within said hot air pipe and to said manifold, and means for supplying heat to said heaters.

4. A furnace comprising a casing having an opening at its lower part to receive air to be heated, heating chambers within said casing, a fume outlet, hot air pipes each connecting said casing with a space to be heated, a heat conductor and radiator leading from each heating chamber a material distance within a respective one of said hot air pipes, and then leading backwardly therein to said fume outlet, and means for supplying heat to said heating chambers.

5. A self-contained gas heated. furnace comprising a casing, a plurality of hot air pipes each connecting said casing with a space to be heated, a fume outlet, a plurality of heaters within the casing, a plurality of heat conductors and radiators each Within but distinct/from the interior of a respective one of said hot air pipes and leading a material distance therein, then leading backwardly therein to said fume outlet, and

means for supplying heat to said heaters.

6. A gas heated furnace comprising a casing, a plurality of hot air pipes leading from said casing to a plurality of spaces to be heated, a manifold in said casing, an outlet leading from said manifold, a plurality v of gas heatingchambers within said casing adapted to be heated singly or simultaneously, a heat conductor and radiator leading from each heating chamber a material distance within a respective one of said hot air pipes, and then returning therein upon itself and to said manifold.

7 A furnace comprising a casing, a plurality of hot air pipes each leading from said casing to a space to be heated, a manifold, an outlet leading from said manifold, a plurality of gas heating chambers within said casing adapted to be heated singly or simultaneously, a heat conductor or radiator leading from each heating chamber a material distance within a respective one of said hot air pipes, and then returning therein upon itself and to said manifold.

8. A furnace comprising a casing, a substantially horizontal hot a1r pipe connecting said casing with a space to beheated, a fume outlet, a heating chamber within said casing, a heat conductor and radiator leading from said heating chamber into said hot air pipe and extending a material distance along the lower part thereof, then leading backwardly therein along the upper part thereof to said fume outlet, and means for supplying heat to said heating chamber.

9. A self-contained, portable gas heated furnace suspended a considerable distance above the floor and comprising a casing having an opening in its bottom to receive air to be heated, hot air pipes directly connecting said casing to a space to be heated, a fume outlet leading from the top of said casing, heating chambers within said casing, a heat conductor and radiator leading from each'heating chamber a material distance within its respective hot air pipe, and then returning upon itself therein to within said casing, and thence to said outlet, and means for heating said chambers.

10. A self-contained, po rtable gas heated furnace suspended. a considerable distance above the floor. and comprising a casing having an opening in its bottom to receive air to be heated, hot air pipes directly connecting said casing to a space to be heated, a manifold within the casing, a fume outlet leading from the top of said casing, heating chambers within said casing, a heat conduc tor and radiator leading from each heating chamber a material distance within its respective hot air pipe, and then returning upon itself to said manifold, and means for heating said chambers.

GEORGE W. COLEMAN. 

